If the actress admits the results are accurate - as she has already done publicly - then the judge could return her to jail or order her to remain in an inpatient rehab programme.

The judge had been expecting Lilo to arrive at court directly from jail, where he ordered her to be held on September 24 after a brief hearing. But within hours, another judge had overturned his ruling and the star was released on bail.

The following week, an unnamed source close to the actress said Lindsay had entered rehab for the fifth time.